Oro does seem alot more advanced than when he fought sarutobi, but I think it's completely justified. The only time oro was put in a disadvantageous position in the sarutobi fight was when his soul was snatched by the death god. At that point, oro already lost the ability to do insane snake-related stunts.

@Sapphire: I believe Jiraiya specifically stating that naruto loses conscious control of his body with the 4th tail proves that naruto is, in fact, unconscious right now. Reread the scene where Jiraiya explains this. It's pretty important. Also, the only reason naruto isn't attacking his teammates is because they're not as close to him as Oro is (not to mention oro's the only one attacking him).